1/* 2 * Copyright (C) 2003 PMC-Sierra Inc. 3 * Author: Manish Lachwani (lachwani@pmc-sierra.com) 4 * 5 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 * 23 * You should have received a copy of the GNU General Public License along 24 * with this program; if not, write to the Free Software Foundation, Inc., 25 * 675 Mass Ave, Cambridge, MA 02139, USA. 26 */ 27#include <linux/bcd.h> 28#include <linux/init.h> 29#include <linux/kernel.h> 30#include <linux/types.h> 31#include <linux/mm.h> 32#include <linux/bootmem.h> 33#include <linux/swap.h> 34#include <linux/ioport.h> 35#include <linux/sched.h> 36#include <linux/interrupt.h> 37#include <linux/timex.h> 38#include <linux/termios.h> 39#include <linux/tty.h> 40#include <linux/serial.h> 41#include <linux/serial_core.h> 42#include <linux/serial_8250.h> 43 44#include <asm/time.h> 45#include <asm/bootinfo.h> 46#include <asm/page.h> 47#include <asm/io.h> 48#include <asm/irq.h> 49#include <asm/processor.h> 50#include <asm/reboot.h> 51#include <asm/serial.h> 52#include <asm/titan_dep.h> 53#include <asm/m48t37.h> 54 55#include "setup.h" 56 57unsigned char titan_ge_mac_addr_base[6] = { 58 // 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00 59 0x00, 0xe0, 0x04, 0x00, 0x00, 0x21 60}; 61 62unsigned long cpu_clock_freq; 63unsigned long yosemite_base; 64 65static struct m48t37_rtc *m48t37_base; 66 67void __init bus_error_init(void) 68{ 69 /* Do nothing */ 70} 71 72 73void read_persistent_clock(struct timespec *ts) 74{ 75 unsigned int year, month, day, hour, min, sec; 76 unsigned long flags; 77 78 spin_lock_irqsave(&rtc_lock, flags); 79 /* Stop the update to the time */ 80 m48t37_base->control = 0x40; 81 82 year = bcd2bin(m48t37_base->year); 83 year += bcd2bin(m48t37_base->century) * 100; 84 85 month = bcd2bin(m48t37_base->month); 86 day = bcd2bin(m48t37_base->date); 87 hour = bcd2bin(m48t37_base->hour); 88 min = bcd2bin(m48t37_base->min); 89 sec = bcd2bin(m48t37_base->sec); 90 91 /* Start the update to the time again */ 92 m48t37_base->control = 0x00; 93 spin_unlock_irqrestore(&rtc_lock, flags); 94 95 ts->tv_sec = mktime(year, month, day, hour, min, sec); 96 ts->tv_nsec = 0; 97} 98 99int rtc_mips_set_time(unsigned long tim) 100{ 101 struct rtc_time tm; 102 unsigned long flags; 103 104 /* 105 * Convert to a more useful format -- note months count from 0 106 * and years from 1900 107 */ 108 rtc_time_to_tm(tim, &tm); 109 tm.tm_year += 1900; 110 tm.tm_mon += 1; 111 112 spin_lock_irqsave(&rtc_lock, flags); 113 /* enable writing */ 114 m48t37_base->control = 0x80; 115 116 /* year */ 117 m48t37_base->year = bin2bcd(tm.tm_year % 100); 118 m48t37_base->century = bin2bcd(tm.tm_year / 100); 119 120 /* month */ 121 m48t37_base->month = bin2bcd(tm.tm_mon); 122 123 /* day */ 124 m48t37_base->date = bin2bcd(tm.tm_mday); 125 126 /* hour/min/sec */ 127 m48t37_base->hour = bin2bcd(tm.tm_hour); 128 m48t37_base->min = bin2bcd(tm.tm_min); 129 m48t37_base->sec = bin2bcd(tm.tm_sec); 130 131 /* day of week -- not really used, but let's keep it up-to-date */ 132 m48t37_base->day = bin2bcd(tm.tm_wday + 1); 133 134 /* disable writing */ 135 m48t37_base->control = 0x00; 136 spin_unlock_irqrestore(&rtc_lock, flags); 137 138 return 0; 139} 140 141void __init plat_time_init(void) 142{ 143 mips_hpt_frequency = cpu_clock_freq / 2; 144mips_hpt_frequency = 33000000 * 3 * 5; 145} 146 147unsigned long ocd_base; 148 149EXPORT_SYMBOL(ocd_base); 150 151/* 152 * Common setup before any secondaries are started 153 */ 154 155#define TITAN_UART_CLK 3686400 156#define TITAN_SERIAL_BASE_BAUD (TITAN_UART_CLK / 16) 157#define TITAN_SERIAL_IRQ 4 158#define TITAN_SERIAL_BASE 0xfd000008UL 159 160static void __init py_map_ocd(void) 161{ 162 ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE); 163 if (!ocd_base) 164 panic("Mapping OCD failed - game over. Your score is 0."); 165 166 /* Kludge for PMON bug ... */ 167 OCD_WRITE(0x0710, 0x0ffff029); 168} 169 170static void __init py_uart_setup(void) 171{ 172#ifdef CONFIG_SERIAL_8250 173 struct uart_port up; 174 175 /* 176 * Register to interrupt zero because we share the interrupt with 177 * the serial driver which we don't properly support yet. 178 */ 179 memset(&up, 0, sizeof(up)); 180 up.membase = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8); 181 up.irq = TITAN_SERIAL_IRQ; 182 up.uartclk = TITAN_UART_CLK; 183 up.regshift = 0; 184 up.iotype = UPIO_MEM; 185 up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; 186 up.line = 0; 187 188 if (early_serial_setup(&up)) 189 printk(KERN_ERR "Early serial init of port 0 failed\n"); 190#endif /* CONFIG_SERIAL_8250 */ 191} 192 193static void __init py_rtc_setup(void) 194{ 195 m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE); 196 if (!m48t37_base) 197 printk(KERN_ERR "Mapping the RTC failed\n"); 198} 199 200/* Not only time init but that's what the hook it's called through is named */ 201static void __init py_late_time_init(void) 202{ 203 py_map_ocd(); 204 py_uart_setup(); 205 py_rtc_setup(); 206} 207 208void __init plat_mem_setup(void) 209{ 210 late_time_init = py_late_time_init; 211 212 /* Add memory regions */ 213 add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM); 214 215} 216